Picture frame



FIG. 1 is a perspective view of a picture frame, showing my new design;

FIG. 2 is a perspective view showing a second embodiment of my newdesign; and,

FIG. 3 is presective view showing a third embodiment of my new design.

The broken lines are for environmental purposes only and form no part ofthe claimed design.

The ornamental design for a picture frame, as shown and described.